Massac County RainfallUnited StatesILMassac County25%Metropolis 25% Chance 25%Brookport 25% Chance 20%Mermet Lake 20% Chance Big BayBoazBrookportCretaceous Hills Nature PreserveFort Massac State ParkHillermanJoppaMassac Forest Nature PreserveMermetMermet LakeMetropolisMetropolis Municipal AirportNew ColumbiaRound KnobSamothShady GroveUnionville